Image warping is an important technique in the field of computer animation.This paper presented a method to implement it.In this method

surface interpolation based on Biharmonic spline was used for image spatial mapping.By using inverse mapping and bi-linear interpolation to implement image resampling and combining image's cross-dissolve

we completed image morphing.Due to the flexibility of this method

animators can easily adjust the numbers or positions of feature points to control the detail of warping without other operations.Experiments show that this approach can produce fluid and natural transition image.Besides

every warped image has both stable image boundary and good visibility.